Improved door-fastening and knife



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N- PETERS. PHOTO-LITHOGRAPMER. WASHINGTON. D C.

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TO ALL WHOM IT `MAY CONCERN:

Be it known that I, A. NV. HALL, ofthe city, county, and State of New York, have invented a certain new and useful Combined Pocket-Knife and Door-Fastener, of which the following is a full, clear, and exact description, reference being had to the accompanying drawing forming part of this specification, and in which- Figure 1 represents a side view ofthe device in its closed condition.

Figure 2, a back view of the same, and

Figure 3 a view thereof in its open condition as a door-fastener, and as applied to secure a door against being opened.

Like letters indicate like parts throughout the several figures.

The nature of my invention consists in a combination with a pocket-knife, so as to fern*l but the one device, of a gimlet or taper screw, se arranged as that when thrown open the knife may not only be used as a handle to turn the screw, which being taper is free to enter without previous boring, but is made to form a button across the door and its jamb on entering the screw into either. l

Referring to the accompanying drawing, a a represent thesides of a pocket-knife, of which b is the back or knife-springs, and c the blades. The sides a a are shown extended at the back, so as to form checks to receive within them a gimlet or taper screw, cl, pivotcd to the sides or cheeks as at e, and, which may be shut down so as to lie within said sides or cheeks, as represented in figs. 1 and-Q, or may he extended :is in fig. 1, where it is represented as entered within the jambf of a door, g, o'r it may be screwed into the door, accordingly as the latter opens inwards or outwards, the knife-handle serving as a button to cross the door and jamh as well as a handle to enter lor withdraw the screw, which is preferably situated in the centre of said handle relatively to its length, to equalize the leverage on opposite` sides of the screw and steady the workingr of it. When shut down said screw offers no obstruction to carriage of the knife in the pocket, and presents no interference with the blades when the device is designed to be used only as aknfcA Furthermore, such screw being of a gimlet or taper. form, no previous boring is necessaryfor its entry in the door or jamb.

In no respect does this door-fastener and knife combined resemble cork-screw and other combined knifeattachments as previously used, as such have never been constructed or adapted to answer` as a: door-fastener, as here shown and described, while other door-fasteners, employing screws, have usually required separate drilling or boring before the screw could be applied, or have been of themselves a separate device, not combined with a knife, which latter arrangement is not simply a matter of economy as dispensing with a distinct handle,

but a knife being an article of such general utility and necessity the carriage of one constructed as here described.y

involves the provision at the Sametime, and on almost all occasions, of a door-fastcner, and this without adding materially to the bulk of the knife. Such la combined device will be found of great 'advantage to travellers and others.

What I claim as my invention, and desire to secure by Letters Patent, is A pocket-knife, provided with a pivoted or hinged screw, whereby it is made to subscrve the purpose of a door-fastener, substantially as spesitied.

A. W. HALL. Witnesses:

J. W. CooMns, GEO. W. REED. 

